作者:Toru Amaya、Yusuke Maegawa、Takaya Masuda、Yuma Osafune、Toshikazu Hirao
DOI:10.1021/jacs.5b05058
日期:2015.8.19
Selective intermolecular oxidative cross-coupling of enolates, which is a bond-forming reaction between carbanion equivalents, remains as an unsolved issue despite its potential utility for the direct synthesis of unsymmetrical 1,4-diones. The main difficulty derives from the unavoidable homo-coupling. Our strategy depends on the selective one-electron oxidation of one enolate to afford an electrophilic
烯醇化物的选择性分子间氧化交叉偶联是碳负离子等价物之间的键形成反应,尽管其在直接合成不对称 1,4-二酮方面具有潜在用途,但它仍然是一个未解决的问题。主要困难来自不可避免的同质耦合。我们的策略取决于一种烯醇化物的选择性单电子氧化以提供亲电羰基α-自由基物种,然后用另一种烯醇化物捕获。本研究证明了硼和甲硅烷基烯醇化物之间选择性氧钒 (V) 诱导的交叉偶联。